package com.atguigu.lease.web.admin.custom.interceptors;

import com.atguigu.lease.common.context.LoginUser;
import com.atguigu.lease.common.context.LoginUserContext;
import com.atguigu.lease.common.utils.JwtUtil;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.lang.Nullable;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.HandlerInterceptor;

@Component
public class AuthenticationInterceptor implements HandlerInterceptor {

    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {

        StringBuffer requestURL = request.getRequestURL();

        System.out.println("===============前置拦截器:"+requestURL+"=============");

        String token = request.getHeader("ACCESS_TOKEN");
        if(StringUtils.hasText(token)){
            // 如果token不为空，解析
            Claims claims = JwtUtil.parseToken(token);
            Long userId = claims.get("userId",Long.class);
            String username = claims.get("username",String.class);
            LoginUser loginUser = new LoginUser(userId,username);
            LoginUserContext.loginUserThreadLocal.set(loginUser);
        }

        return true;
    }

    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, @Nullable Exception ex) throws Exception {
        LoginUserContext.loginUserThreadLocal.remove();
    }

}
